According to a report by American news channel, PBS News Hour, former Petroleum Minister, Diezani Alison-Madueke might have personally supervised the looting of $6 billion (N1.2 trillion) from Nigeria’s coffers.

This was disclosed by the network’s Special Correspondent, Nick Schifrin in a video report published on YouTube on December 2, 2015.

“US and British officials told us Alison-Madueke might have personally overseen the stealing of $6bn (N1.2tr),” Schifrin said in the report which is part of a series titled “Nigeria: Pain and Promise.”

“The most common method is awarding oil contracts to companies owned by friends,” he added.

Schifrin also interviewed Emir of Kano, Sanusi Lamido Sanusi who said that the country was losing about $1 billion a month during the Goodluck Jonathan regime.

“In Nigeria, there is no accountability at all and that is why I think Nigeria’s corruption is worse than corruption in most parts of the world. It is the worst type of corruption, it’s stealing,” Sanusi said.

“Frankly, I think a billion dollars under Jonathan a month was about what we were losing,” he added.

Sanusi lost his job as CBN governor after he alleged that $20 billion had gone missing from the coffers of the Nigerian National Petroleum Corporation (NNPC) which was under Alison-Madueke's supervision.

Ms Alison Madueke has however denied the allegations of looting levelled against her saying that Sanusi blew the whistleat the time because she didn’t help him to get appointed as the President of the African Development Bank (AfDB).

Kaduna State Governor, Nasir El-Rufai also told the New York Times recently that looting of public funds under Jonathan’s administration took place ‘openly and with records.’